Sailboat-rigging



way of example in Figure 1. A. Y p .trates a modification. The sail-boatillusvis a gunter sail without a gaff.

PAT

FBEDRIKVLJUNGSTRM, oF BREVIK, LiDINGN, s'vvnnaiv'.v

saiLBoAT-RIGGING.

To all whom t may concern Be it known that I, FREDRI'K LJUNG-- sTRM,chief engineer, subject ofthe King of Sweden, residing at Brevik,pLidingn,

Sweden, have invented certain new and usel ful VImprovementsr inSailboat-Rigging, of which the following is aA specification.

The present invention relates to ajnovel type of rigging for sailingkvessels, which rigging isparticularly applicable to sail-V boats ofracing type.

The obj ect o f the invention is to provide a rigging with a reducednumber of sails, and the invention consists therein thatthe mast ispivotally connected withthe vhull so that it may be brought-in differentpositions forward and backward in the longitudinal direction ofthevessel.

In theA Vaccompanying drawing, an embodiment of a boat provided with arigging according to the invention is shownby Fig. `2illustrated isprovided. withone sail only which On sailing a boat of threordinaryvtype having only a main sail or other aft-sail,

the boat will luifnearer Wind, ifl this isnot Y prevented by thehelmsman at the tiller.V

less heavily on the' rudder, `particularly when sailing Yin lateralwinds', or near.V the 'g' Y formed into a ball 13 where going throughV``Vthe deck, which latter is reinforced yas shown in the drawing. Ofcourse, journal-move! 'ment may be used as well. Preferably, the

wind, and, aboverall, `when-sailing close to the wind in rough weather.Y

In order to prevent` this, 'thesail' and the influence thereof on theboat are, according to the invention, displaced ahead by inclining themast forwardly in the longitudinal direction of the boat. The center ofgravity and the pressure centers offthe sail are thus displacedforwardly.

Referring to the drawing, the mast 2 of the boat 1 which carries thesail 3 is soV connected with the boat that it Ymay, on sailing, beinclined together with the sail either ahead or astern in thelongitudinal direction of the boat. The mast 2 is provided with one ormore foreand backstays, 4c and 5 respectively, passing each over aroller 6 and 7 respectively to a rolling device, a windlass .or the like8 so devised that the one stay or group of stays is rolled onto a drum,simultaneously as the other stay or group of stays is rolled offrasecond drum.

When there are a number of stays em- Speciicaition of Letters Patent.vPatented Apr. 19', 1921. I

Application mea March s, i92o.fseria1 No. 353,053.

Vployed afore or aft, each stay preferably each forestay 4a, 4b and 4?is wound on a separate drum 8,'8b`and 8, respectively, while'thebackstay 5 is wound on a drum- 19, said drums having such diameters thathas its own'drum. As shown'inFig. 2

the proper V.lengthsfof the fore 'andback=v erably, thedrums arearranged on the same shaft. To effect anadjustment'of the ten-yV staysare yhauled in kor paid `out so as to f secure a good stretching yof thestays. Pref-2 sion' of the stays, it isalso possible "so to thereto, andit may be disposed either Vinv the 'cockpitfof the boat in the proximitytov f the rudder, or a separate'.wi-ndlassjl 11 may,

with the group ofstays running under deck. I-Iowever, the windlass `11may be reduced to Vbe combined thesaidplace for instancejP V '80 Y acrank which is connected either mechanif Y cally or in-some otherconvenient waywith the windlass 8, so ythat fthe'latter may-bef,"

-operatedfrom thecockpit. 1 The windlassY 8v or 11'- respectively ispreferably provided with a worm. Y I y. a l y YThe mast 2. is movablyarranged in the deck 12 ofthe'boa't, forinstancebvbeing,`

lower end of the mast has Yattached thereto Y one or more rollers 14running on a curved Y By operating the windlass, the mast 2 Y may beinclined in the-longitudinal direction of the boat, for instanceV towardthe stem of it, whereby` the pressure centers aredisplaced from V16 Vto17.Y As will be seen` from the drawing, aV considerable areaV of thesail is movedY toward the stem by onlyv a slight angulardisplacementY ofthe mast, and in this way the sail'rnay, when sailing, be adjusted inVaccordance with ther by adjusting the position of the mast and? force ofthe `Wind so as to relieve the rudder of most ofgits load: In4fact,itWill eveni be possible to sail Without a rudder only the sail. yH By arranging fthe mastaccoifding tothe present invention, a boat maybe `sailed vvith A one sail only, preferably an ait-sail corre spondngto `the ordinary main sail. There y fore,` Whilemaintaining the sainearea` `of `the sail,rthis single sailmay be taken larger than` usual, oras large as the total; area of the sails oit the ordinary. Atype ot boatas i heretofore usech `For instance, when .the sail i5,

area of a modern 3 0 square meter knockabout-cruiser is divided iiiftivo.sails,ra boat "with al rigging according tothe invention :y has onlyone sail ivithan area 05.30 square riggingbeeomes f much higher, andconse- A further advantage isaterably should be placed more ahead, thussecuring a larger clear space aft of the mast.

l Besides,the further advantage is obtained that the" hoisting and thetaking ini of the in the `form as heretofore leinployedbeing l sails isgreatly facilitated by thefoniission i "of `a fore-sail. `The novelrigging also considerably facilitates the sailing ofthe boat, all botherabout attire-sail and a back` stay i Vhat I 'claim "astneW anddesireJto-seciire by Letters Patent of the United VStates is l. Ariggingforsail beats, characterized i bythe mast with the ,riggingbeing,adjustable in the longitudinal direction theboat,

y and provided `with an operating device by tion of the the` sail.

means `of which thelniast may, vvhensailing,

y be caused to assume ldifferent slanting positions,'in` order to changethefrelative posipressure center of; thefvvind on ,E p

i "WSWENSWENssoN, 'l

2.- Aaigging as claimed in claim l, characterized,` byY this that themast is connected with the stein and the stern of the boat by YJinean's" `of stays connected with a Windlass in such a Waythat themastmay be brought `indifferent slanting positions vby `turning ahandvvlieel, a crank or the like.

""3. An embodiment of a rigging according to claim 2, characterized bythis that the foresta/y and tliebaclr` stay run' over a roller iarrangedahead and astern respectively, each stayi'unning also oveioneoi' two orrmore drums connected with Aone another, said drums beingpreferably y' arranged on Y the saine` shaft, in? order that^ on Windinghome i the ene Lstay or ythe one'group oi' stays, While changing theposition ofthe mast,the other stay ori-the other group "o'staysmay Abevvvound off its `drum in acci-responding de# gree.l y V 4. riggingfasclaimed in claimV- 2,=c`har acterized bythe provision' of a plurality ofy forel stays, each of which is connected `With a separateD 'drum'i i 5.fAnenibodiment" of an arrangement `according Vtel claim 2,"characterized by the Windlass beingsodisposed astobe operated 'from thecockpitl of the 'sail-boat@ 6i An einbodirnent'of arigging accord`ingfto 'claim lgcharacterized by. this that thefniastis connectedwiththe hull`,prei5erA ably vvith vtlie'de'ck of'V the boat, by means of l asocket-j hint'4 connection,

r. A rigging asclaimed in` claim 6, char@` acterizedbytthe lowerfeiid ofthe-mast cooperating with the hullby means-of a guidving device adapted'to Aguide the mast rela- "tively'to tliehull. f f' y lntestmonygvvhereof I ahx'niy signature in presence otyvo'vvitnesses.

" FREDRIK 'LJ-UNGSTRQM,

Vitnesses: 'i We i T, H. BE eRoTH, f

